A U.K. tour of the musical is reportedly in the works.
The Scottish singer told the British newspaper, "I'm definitely going to be on stage. I'd rather that than having to sit watching people up there looking like me."
"I want to be doing the music parts, so I'll be coming in and out of the show," Boyle continued. "I'm looking forward to doing some live work. It'll be really nice to see so many of the people who have supported me in person."
Boyle's initial performance on "Britain's Got Talent" became a worldwide YouTube hit, as did her performance of the Rolling Stones' "Wild Horses" on "America's Got Talent." Her albums include "I Dreamed a Dream" and the recent "The Gift."